Printing mechanism



H. THEILGAARD PRINTING MEGHANI su May 1o, 1921.

Filed Feb .l 2. 1922 IHEJ fsa I i `Iilllllllllllllllllllllllllll ylllllllll 1l Sheets-Sheet 1':v

I May 1o, 1921.

H. THEILGAARD PRINTING MECHANI SM 1l' Sheets-Sheet 4 Filed Feb. 2. 1922 Mai 1o, 1921.

H. THEILGAARD PRINTING MEGHANISM Filed Feb.2, 1922 ll Sheets-Shout 5 1|. l= |L= m May' l0, 1927. v 1,628,078

- H. THEILGAARD PRINTING IIECHANI Sll Filed Feb.2. 1922 11 sheets-shut' 9 'ai .fiuumllll o O 9H v E l IIIIHH Q5 '.F'g.' 21 l H. THEILGAAI'RD PRINTING MECHANISM Filed kreuz; 1922 11 sheets-sheet y1o 10 1927. May H. THEILGAARD PRINTING MECHANISI Filed Feb..2, 1922 A11 shams-sheet 11 Patented May 10, 1927.

UNIT E D SIT AT ETS4 PATENT OFFICE.

I-IOLGER THEILGAARD, OF CHICAGO, ILLINOIS, ASSIGNOR TO ELECTROGRAPII- AD- VERTISING SERVICE, OF CHICAGO, ILLINOIS, A CORPORATION 0]? ILLINOIS.

PRINTING MECHANISM.

Application leduFebruary The invention has` for a. principal objectA thieprovision of an apparatus whichy Will automatically eiiectA the substitution of a` i number oflinotype slugs or similar printf ingptype. Within the printing chase aiter each impression.v

ily invention contemplates in this regard.

the equipmentof a printing press with .an apparatus orinstrumentality accomplishing the. change mentioned as a part of the text itself so that the substituted characters Will print in exact uniformity With the unchanged characters; and all Will be of type printing as contradistinguishedA from type'- Writer printing, although it Will be manifest that simulation of typewniting is Well Within the purview of the invention, considered from several aspects. The invention is adapted, ot' course, for varied salutations and addresses as a part of circula-r letters and dodgers and the like. It has, however, a much wider use7 being adapted to change the text of pages Within a printed volume without the fact that suoli change has been made being capable of subsequent detection. As a concrete example of such use, it is possible with a Vmachine enibodyinginy invention to address one or more advertisements in an issue of a magazinel individually to the particular subscriber for whom each copy is intended.

Another importan-t object of the invention'is the provision of a machine of thisv character Which will be Wholly automatic in its action and Which Will not' slow the action of the press to a degree rendering use of the machine impracticable from a commercialv standpoint.

Numerous other objects and advantages ot the invention-Will be apparent as it is better understood from the following description;

which. taken in connection with the accom-y panying drawings, discloses a preferred ein-` i t bodimenL thereof Referring to the drawings,

Figure 1 is a side elevation of a machine embodying` my present invention;

Fig. 2 is a side elevation looking from the opposite side;

particularly 2, 1922. Serial No. 533,533.

Fig.4 3 is anend vieW, taken from the operators end'of the press; l

Fig. 4 is a partial enlarged iront elevation ot the slugv feeding mechanism;

Fig. 5 is an enlarged' detail of the` mechanism for moving the slugs endwise as an incident to the feeding;

Fig, 6 is a partial .plan section; taken sub,- stantially on the lineof Figt 4;

Fig. 7 is a detail section of the magazine pressure release;

Fig. 8 is a section taken substantially at right angles and through the part shown in Fig. 7;

Fig. 9 is a perspective view of a detailr of the magazine;

on the line 101O of Fig. 4; Fig. 11 is a viewsimilar to Fig. 10, showing the parts in different relation;

F 12 is a perspective dissembled View of a detail of such mechanism;

Fig. 13is a fragmentary section similar to Figs. 10 and 11; and showing the parts in still a different relation;

FiO. 14 is a section taken substantially on the line 14.14 of Fig. 4;

Fig. 15 is ay section taken substantially on the line 15-15 of Fig. 4;

Fig. 16 is a section through the magazine support, and taken substantially on the line 16-16 of Fig. 17;

Fig. 17 is an enlarged detail partialelevationbt the mechanism for swinging the magazine;

Figs. 18 and 19 are sections taken substantially on the lines 18-18 and 19-19Y respectively of Fig. 17

Fig.- 20 is an enlarged partial elevation of the upper drive members;

Fig. 21 is a topvplan vieW,ythe parts being shown in section, of the lower drive members;

Figs. 22and 23 are sections taken on the lines 22-22 and 23-23 respectively of Fig. 21; i

Figs. 24 and 25 are sections taken respectively on the lines .Q4-24 and 25-25 ot Fig.20;

Fig. 26 is a. front elevation ot the chase showing the chase .lifting mechanism;

Fig. 2T is a section taken substantially on the line 27-27 of Fig. 26;

Fig. 28 is a section of. the chase lock and release;

Fig. 29 is a perspective view of a slug group; and

Fig. 30 is a section taken substantially on line 30-30 in Fig. 28.

For the purpose of illustrating my present invention, I have shown on the drawings a press in which it is embodied. rllhis press, as selected for the purposes of illustration, is, so far as the ordinary printing parts are concerned, of a well lznown standard construction. It comprises the frame work 41 carrying the platen 42 which in the printing is adapted to cooperate with the chase support 43, and has the usual inliing roll organization 44. The chase support and the inking roll organization are carried in a swinging frame part 45. These parts and other incidental press parts are not thought to require particular description.

I have provided a supplemental frame work 46 which supports the operative mechanisms and devices I have provided for accomplishing the several functions incident to the change of type matter contemplated.

Power is introduced into the apparatus from a pulley 51 upon a shaft 52 (Figs. 1, 2 and 21), this shaft being mounted in bearing standards 53 and 54. A fly wheel 55 is mounted 0n the end of the shaft and the clutch 56 of any preferred type or construction is positioned for manipulation by a shifting member 57 connected by a rod 53 with a clutch lever 59 pivoted at 61 at the front of the machine. The shaft 52 delivers its power periodically to a shaft 62 in bearings 63 and 64 and continuously to a shaft 65 having bearing at one end in the bracket 54 and 66 and in upper bearings 67 and 68. The shaft 62 drives the printing mechanisms proper, and the shaft 65 the slug changing devices. A shaft 69 has bearing at 71 in the standard 54 and at 72 in the frame of the machine, and carries a gear 73 which meshes with a pinion 74 on the clutch. The shaft 69 is also provided with a pinion 75 meshing with a gear 76 on a shaft 77.

[he intermittent drive for the printing parts will be first described. A sleeve 78 is mounted upon the shaft 62 and has rotative bearing at 63. This sleeve is provided with a pinion 79 meshing with the gear 76 so that through the train of gears, just described, continuous rotation is imparted to the pinion 79. The left hand end of the sleeve (viewing Fig. 21) is given a ratchet face 8l, and this is adapted for engagement by a cooperating face of a sleeve part 32 splined against independent rotation on the shaft 62 but movable lengthwise thereof. A spring 83 normally pushes the ratchet face into interlocked relation and when interlocked rotation of the shaft 62 of course results. The sleeve member 82 is engaged by a yoke 34 upon the end of a plunger 85, having sliding bearing in the frame and carrying a roll 86 in engagement with a cam 87 on the side of the gea-r 76. Viewing Fig. 22, it will be noted that this cam is in the form of a rib, extending throughout an appropriate arc on the adjacent face of the gear, and when the roll 86 rides up on this rib, power is eut off from the shaft 62 by disengagement of 'the ratchet faces. I provide means for stopping further rotation of the shaft 62. This means comprises a brake drum 63 on the shaft 62 and this brake drum is embraced by a brake band 89 controlled in turn by a brake lever 91 carrying a roll 92, engaging a cam 93 on the shaft 77. It will be understood that the shaft 62 through gears 94 and 95 actuates shaft 96 which is the shaft driving the parts making the printing impression. These parts, as has been stated, are of usual construction and operate in the usual manner when actuated, and so are not shown or described in detail.`

It will be noted that the gear 76 rotates continuously. The shaft 77 carries a bevel pinion 101 which engages a bevel pinion 102 on a shaft 103 having bearing at 66. The shaft 103 is enlarged above the bearing and is recessed at 100 to receive the lower end of shaft 65. A clutch sleeve 104 is fixed on shaft 65. Referring to Fig. 1, reference character 105 indicates the usual hand lever for interrupting the printing action without shutting off the power. This lever is schematically shown as connected in the usual fashion to the arm 106 usually accomplishing this function in this type of press. It is also connected by a thrust member 107 with bell crank 108 for operating the slidable clutch sleeve 104. Interruption therefore, of the printing action is accompanied by like interruption of the slug feeding and substituting mechanisms t0 be presently de-' scribed, and which are actuated through the shaft 65.

Referring now to Figs. 4 and 6, the slugs, indicated by reference character 111, are fed down from a slug carrier 112 into a chute 113 by gravity. At the bottom of this chute they are moved endwise or laterally at 114 into a second chute 115, in which the slug groups are spaced apart and intermittently advance by reciprocating dog carrying slides 116 to the magazine indicated generally at 117.

The slug carriers 112 may, if desired, be the storage receptacles for the slugs, and are arrangeable in the inclined operative position, shown in Fig. 4, by inserting the lower end in the top of the chute 113 and resting the upper end upon the support 118.

The slugs are given the endwise movement at 114 by a mechanism to be now described, reference being had more particularly to Figs. 1, 14, 5 and 6. The shaft 65 rotates a shaft 121 mounted in suitable bearings 122, 123 in the supplemental frame, through a spiral gear 124 on shaft 65, and spiral gear 125v on shaft 121. l Shaft 121 carries a bevel pinion 126 at its front end Which meshes With a bevel pinion 127 on a vertical shaft 128, this shaft'in turn having a bevel pinion 129 on its upper end meshing with a bevel pinion 131 on a cross shaft 132, eX- tending across at the top near the front of said supplementalframework. This shaft carries a cam 133 engaged by a roller 134 on a lever 135 pivoted at 136 on the frame and provided with a spring 137 to cause the roller to follow the cam. The lowerend of the lever135 is slotted at 130 to engage a pin 14() in a reciprocating rod 138. The rod 138 is suitably guided as at 139 and slides back and fort-h across and above the slugs. At its forward end it carries a downwardly extending arm 141 which in turn-carries an inwardly extending thrust rod 142 having bearing at 143 through the outer chute side, and having at its inner end a pusher head 144 adapted to engage the outer slugend and push a group of slugs into the second chute 115.

It may be mentioned at this point that T prefer to secure the individual slugs of a group together, and this may conveniently be done by welding them throughout a confined area, or, throughout a number of confined but distributed areas, as indicated in Fig. 29 by dotted lines 145. This arrangement permits of the use of a greater' or less number of slugs Without the need of providing delicate selecting and feeding mechanisms, it being merely sufficient that the various passages permit movement of slug groups of greatest dimension and the feeding mechanisms beingso constructed and arranged to accurately engage and feed slugs of least dimension. l y

lVhen a slug group has been'moved intor chute 115 it is initially advanced, as Will be now described, to bring it Within the range of action of the dog carrying slides 116, reference being had in this connection to Fig. 6. A cam 151 is mounted upon the shaft 121 and engages a roll 152 upon a lever 153 pivoted at 154 in a bracket 155 extending out from the supplemental frame. This lever is connected by a link 156 with a block or cross head 157, secured to t'vvo rods 158 having bearing .at 159 and 160. These rods carry a head 195 that is arranged to support one or more rods 196 that are adapted to be projected through apertures 161 just back of the slug group when it is first moved into the chute 115, and upon reciprocation of the rods 158 and 196 under the oscillationy of the lever 153, the slug group is advanced to Within the zone of action of thedog carrying slides 116. Referring nonv to Figs. 6 and 14, the

drive for the dog carrying slides will be noW described. A cam 166 is mounted upon shaft 121 and this cam is adapted forL en-` gagement by a-roll 167 on a slide armv 168. The slide arm is slotted to embrace the shaft 121 and carries a second roll169 f adapted .for engagement upon the opposite side of a cam 171 companion With cam 166. The slide rod 168 has bearing on the shaft 121 and in a bracket 172, andis connected by a roll 173 in a vslot 174 in the end of a lever 175 pivoted at 176 on bracket 155.

The lever is connected by a link 177 to an.

arm 178 (Fig. 14) fast on 'a rock shaft 179, mounted in bearings 181 extending down beneath the chute 115. This shaft has an arm 182 extending up at each side. of the chute and connected by a link183 with. a rod 184 slidable in bearing 185 and engaged by an arm 186 extending out from.A the side advanced and are shoved one by one into` a transfer mechanism Which conveys them to adjacent the chase. This transfer mechanism and the devices for operating it Will now be described, reference being had in this connection to Figs. 6, 10 to 13, 16 and.

17. A. shaft 191 isv mounted in the supplementall frame Work and above and inwardly ofthe chute 115. The magazine 117 contains two pockets 192 and 193, each of a size adapted to contain a slug group. It may be mentioned at this point that the magazine, When in the position shown in Fig. 10, presents the pocket 192 to receive a slug group from the chute 115, and is then swung down to the chase, delivering this slug group into the chase and receiving from it the slug groupA previously printed. This last mentioned slug group is received in the pocket 193 and brought back for disposal, being shoved into a receiving chute 194 (Fig. 6). The rods 158 are projectible through rthe pockets y192 and 193 and through a partition 197 (Fig. 7) between them. These rods 158 push the slug group from the pocket 193 into the chute 194 and the slug group being received in the pocket 192 dro as upon the rods and is supported until the rods are retracted When the slug group drops to the bottom of the pocket 192.

The slug group upon being received in the pocket 192 is held against displacement in the movement of the magazine by a rod 198 (Fig. 8) extending through t-he magazine Wall 199, land arranged beneath the 1 chute 115 when the magazine is up (Figs. 7 and 10). This rod extends through a thimble 201 Within which is a spring 202 bearing at one end against the thimble and at the other against a collar 203 on the rod. The outer end of the rod is provided with a pin 204 locking it to a sleeve 205 on the end of the thimble and carrying two rollers 206 adapted to engage a cam 207 to retract the rod when the magazine arrives at the top of its stroke, the cam being locate-1l upon the bottom of the chute 115. When the magazine is swung downwardly the rod is moved by the spring 202 into engagement with the side of the slug group in the pocket 192 and holds it in place with a yielding pressure.

The downward movement of the magazine brings the pocket 193 in registration with the slug group contained in the chase, and at this time a gate or closure is disposed across the face of the slug group in the pocket 192. This gate is indicated by reference character 208 (Fig. 11) and is secured to a bracket 209 mounted on the shaft 191 (Fig. 6), this bracket being also held against independent rotation so that the gate and magazine swing together.

The mechanism for swinging the magazine will now be described. A shaft 211 is mounted in horizontal position in bearings 212 and 213, and carries a spiral gear 214 meshing with spiral gear 124 on shaft The shaft 211 is provided with two cams 215 and 216 which engage rolls respectively on a slotted link 217, these rolls being numbered on the drawings 218 and 219. A slot of the link embraces the shaft 211. The link 217 is connected to a gear 221 to rock the same and this gear meshes with a pinion 222 mounted at 223 on the supplemental frame and carrying a pinion 224. The gear 224 engages a gear 225 fast on the end of shaft 191. The action of these gears is a rocking action and I provide means for cushioning the stopping of the gear and shaft at each end of their oscillations. These means comprise a bracket 226 fast on the gear 224 and having projections 227 and 228 at its end. An arm 229 (Fig. 17) is loosely pivoted on the shaft 223 and extended between the projections 227 and 228 and a spring 231 is provided between the arm 229 and the upper projection 227. lVhen the arm 229 swings down in lowering the magazine 1t engages a stop pin or set screw 232 in` a bracket 233 and compressing the spring brings the magazine to accurate position without A similar construction is provided on the gear 225 at 234, except that here two springs 235 and 236 are provided and the arm is cushioned at the end of its movement in each direction, engaging a set screw 237 1n the bracket 233 and a set screw 238 in a bracket 239.

The chase is lifted from its bed into a vertical position above the bed to permit the slug transfer. A pair of chase guides 241 are mounted above the chase when the chase is in inking position, and alongside these are guides 242 for the chase lifter.'`

The chase lifter comprises side members 243 (Fig. 26) sliding in the guides 242, and conf nected by a cross shaft 244. The chase lifter at each side carries a chase engaging and unlocking device, each such device comprising a depending arm 245 having an end 246 adapted to engage a lever 247 pivoted at 248 on the chase in position to release the usual chase locking device 249 pivoted at 250 and having a latch hook 260 for engaging the chase (Fig. 30). The arm 245 is provided also with a stud 251 adapted to enter into an opening 252 in the chase. A sleeve or socket 253 is carried by the arm and in this socket is a spring pressed detent 254 for yieldingly holding the chase connected to the arm 246. The engagement ot' the chase by the chase lifter is automatic, it being understood that this action occurs as a result of the conjoint movement of the chase lifter and the press bed, the chase lifter going down to receive the chase, and the chase bed finishing its return stroke after printing. The mechanism for raising and lowering the chase lifter will now be described, reference being had in this connection to Figs. 20, 24 and 25. A shaft 261 is mounted in bearings 262 and 263 at the top of the apparatus and carries a bevel pinion 264 meshing with a bevel pinion 265 on shaft 65. The shaft 261 also carries a cam 266 adapted for engagement by a cam roller 267 on the end of an arm 268 of a lever pivoted on a cross shaft 269. The other arm 271 of this lever is formed into two members spaced along the shaft 269 and each connected by a link 272 with the chase lifter already described. The shaft 269 carries a socket 273 in which is mounted an arm 274 carrying the weight 275 to counterbalance the chase. The shaft 261 is located above the shaft 211 and this shaft 211 carries a control cam 276 adapted to engage an arm 277 fixed on shaft 269 to cause the roll 267 to enter the cam groove 266 at the proper instant.

As soon as the magazine and chase are in proper positions the slug group which has' reviously printed will be pushed from the clhase into the pocket 193 of the magazine. Referring to Figs. 10 and 11, a pusher arm 281 is slidably mounted in an arm 282 fixed on the shaft 223. This arm 282 is adapted to be swung down with the magazine into operative position, and as au incident to such swinging the pusher arm 282 is retracted against the force of a spring 283 which normally projects it. This retraction is accomplished by a slide 284 movable in a support 285 and carrying a head 286 at one end having slots 287 therein, and carrying a roller 288 at the other, bearing against a cam 289 on shaft 211. A lever 291 is pivoted at 292 on the arm 282 and carries a pin 293 positioned through the two members of the head 286, riding in the slot 287. The lower end of the lever 291 has slotted connection with the slide or pusher arm 281 at 294. A spring 295 causes the roll 288 to follow the cam.. The action is such that at the proper instant the roller drops into the low point of the'cam and the pusher arm 281 moves forward from the back of the chase to push the previously printed slug group into the pocket 193.

During the downward movement of the magazine the gate has been across the pocket 192 and this gate is now moved over to position in front of the pocket193 and at vthe same time the magazine is moved over to register the pocket 192 accurately with respect to the space within the chase in which its slug group is to be positioned. The mechanism for moving the gate and the magazine sidewise will' now be described. A shaft 303 is mounted above the shaft 191 and has bearing at one end in t-he supplemental frame and at the other is reduced at 301 to fit into a sleeve 302 in turn having bearing in the supplement-al lframe. kThe shaft and sleeve have endwise sliding movement in their bearings. The sleeve 302 carries the bracket 210 adjustably mounted thereon and the shaft 303 is connected by an arm 304 for similar adjustment. A spring 305 embraces the end of the sleeve 302 between the supplemental frame work and a collar 306. The end of the sleeve is engaged by a roll 307 uponthe end of a lever 308 pivoted at 309 and carrying a roll 311 (Fig. 1) engaging a cam 312 on shaft 65, the construction and arrangement of the parts being such as to provide vthe desired sidewise movement of the gate. The shaft 301 (Figs. 14and 16) is provided with an arm 313 embracing a pin 314 having a head for limiting outward movement of the shaft under the action of a spring 315 fixed to the bracket arm 304 and to the supplemental frame. A roll 31.6 on the end of a lever 317 ivoted at 318 (Fig. 17) engages the arm 313/ (Fig.f16). This lever carries a roll 319 engaging a cam 312 on a shaft 322 (Figs. 17 and 20) mounted in vertical position in a bracket 323 and carrying a bevel pinion 324 which engages a bevel pinion 325 on shaft 261.

After the magazine has been moved into registration for delivery of the slug group to the chase, a plunger 326 carried by the magazine pushes the slug group into printing position. This plunger has free reciprocation in guides 327 and is connected by .a pin 328 to an arm 329 pivoted at 331 on the maga-zine housing. `A spring 332 Afixed to the arm and to a bracket 333 normally pulls the arm 329 to retract the plunger. Referring to Fig. 4, it will be noted thatv a shaft 334 is mounted in a bearing 335 in the supplemental frame and carries a downwardly extending arm 336 upon which is mounted a notched block 337 adapted to engage a pin 333 on the arm 329. Thisvshaft is periodically oscillated to cause projection of the plunger to insert the slug group in the chase. The shaft 334 carries avsecond arm 339 (Figs. 4 and 17) connected by a thrust link 341 with a slide 342 embracingv shaft 322 and followinoj two cams 343 and 344 on said shaft 322.

zllhen a slug group is moved from the chase into the pocket 193 it enters between a pressure member 345 (Fig. 9) carried in an arm 346 pivoted on a' stub shaft 347 and the partition 197 of the magazine 117. The

pressure member 345 is normally pulled by a spring 348 up across the side open face of the pocket 193. Vhen the magazine is swung up to slug receiving and discharging position (Figs. 3 and 4), the arm 346 engages a cam face 349 and is swung down out of the way to permit the slug group to be pushed into the chute 194. This action occurs by movement of the rods 158, already described.

During the movement between the opposite ends of travel of the magazine 117, the plunger 326'is latched against upward movement by a latch 351 pivoted at 352 on the magazine and normally held in the position shown in Fig. 11, slightly prior to the arrival of the magazine at its uppermost position. The latch 351 is released or moved from engagement with the plunger' 326 by engaging the cam end of a latch 353 that is mounted on the supplemental frame at 354 and normally held in the position shown (Fig. 11) by a spring 355, permitting the plunger 326 to rise to the position shown in Fig. 10 to permit ofthe insertion of a slug group to be delivered to the chase, vor the substitution of slug groups. The latch 353 is normally held in the position shown in Fig. 11 by a spring 355 and is moved to the position shown in Fig. 10 as an incident to releasing the latch 351. Movement in this direction during the unlatching action is limited by a pin 361 carried by an arm 356 that is pivoted yat 357 vin the supplemental frame work. The hooked end of the latch 353 Vis so formed that when the latchl 353 not supported or reinforced by the pin 361 the latch 351 will move the latch 353 ina counter clock wise direction against the spring 355 asuflicient .distance to allowthe latch 351 to engage over the plunger 326, so that when the magazine moves downwardly the latch 351 will by cam action move the latch 353 to a greater extent in a counterclock-wise direction and become released therefrom. The pin 361 isy carried by an arm 356 that is pivoted on a shaft 357 and carries a roller 358 arranged to engage a cam 359 and to follow the surface thereof, and when the arm 356 is in the position shown (Fig. l) the pin 361. reinforces the latch or prevents counter-clock-wise movement thereot from the position shown. rlhe surface of the latch adjacent the pin 361 is so tapered that when the arm 356 and pin 361i. iarried thereby are lowered from the position shown the latch 353 will be permitted to move in a countor-clock-wise direction and from engagcn'ient with the latch A spring 362 that is arranged to engage an arm fastened on the shaft 357 causes the roll S to follow the contour of the cam 359. The cam may be formed in any suitable manner to effect any desired downward movement of the arm and the end of the arm carrying the pin 361 is arranged over the magazine 326 so that when the arm moves downwardly in accordance with the contour of the cam 359 it forces the plunger downwardly against the spring 332 attached to the arm 329 to locate a received slug and into position to be engaged by the latch 351, or downardly to the extent that the hook of the latch 351 may engage thereover substantially as shown (Fig. 1l).

The slug groups do not receive the accumulated inking effect produced upon the type fixed in the chase, and. on this account I provide a preinking` mechanism for inking the slug groups before they receive the ink from the regular press roll. This inking mechanism comprises an ink tank 367 having any usual inking mechanism 363 governed by a link 369 connected to an arm 371 lixed on the shaft 357 and oscillating with it. An ink table 372 is rotated by a pawl 373 upon the sleeve 302 engaging in a ratchet 4.03 on the under side of the ink table. An inking roll V374 is carried in the arms 375 from a rock shaft 376 in the supplemental frame. An arm 377 connected by a link 373 with a lever 37 9 is fast to this rock shaft 376. The lever 379 is pivoted on shaft 357 and a cam 381 is mounted. upon the shaft 132. A spring 382 causes the roll 383 on lever 379 to follow the cam 33t and is fixed at one end to the connection between lever 379 and link 373 and at the other, at 384-, to the supplemental. frame.

The ink employed to preink the slugs is preferably, or may be the ink used in the printing n'iechanism, and the inking device of the press and for preinking the slugs are of the same general character, so that uniformity of printing action best results.

The slugs when placed in the chase may have varying thickness and are engaged by two spring pressed slides numbered respectively 391 and 392 in Fig. 26. These slides are given the necessary beveled edges to cause them to be retracted by the slugs and to tightly grip them when received. The

slide 392 is carried on rods 393 taking into a block 394 locked in the chase and. backed up by springs 395 held in place in the block by plugs 3f 6. The slide 391 is similarly mounted with the rods 397 extending cross- Wise in the chase and forced out by springs 398. ln each instance the ends of the rods are shouldered at 399 to engage the ends i501 of recesses LflO2 to limit inward movement of the slides so that they may be in position to receive the slug group.

lt is thought that the invention and many ot' its attendant advantages will be understood from the foregoing description, and it will be apparent that various changes may be made in the form, construction and arrangement of the parts without departing from the spirit and scope of the invention or sacrilicing all of its material advantages, the form hereinbefore described being merely a preferred embodiment thereof.

I claim:

l. In a printing` press, the combination of a bed, a printing chase mounted thereon, means locking said chase to said bed, means unlocking the chase and moving it to a position off the bed, and means substituting` a slug group in said chase when so moved.

2. In a printing press, the combination of a bed., a chase mounted thereon, means lifting the chase above the bed, and a device for pushing a partof the type of said chase out of the chase to permit substitution of type 3. In a printing press, the combination of a bed, a chase mounted thereon, a slug carrier movable to adjacent the chase and adapted to convey a slug group to said chase, and means substituting it for a slug group within the chase.

4.. In a printing press, the combination of printing n'iechanism, slug groups for printing, and devices for substituting the slug groups in said printing mechanism after impressions, said devices conducting the slug groups through `a substantially circular path of movement as an incident to the delivery thereof to and from the printing mechanism.

5. In a printing press, the combination of a swinging hed. a chase carried thereby, means substituting in said chase slug groups after each printing impression, and means interrupting the action of the bed to permit such substitution.

G. In a printing press, the con'il'iination of a bed, a chase carried thereby, means in the press for inserting in said chase a slug group, and means movable against the rear of the chase for removing a slug group.

7. In a printing press, the combination of a chase, a chase carrier, means movable from opposite sides of said chase for inserting and removing respectively slug groups in and from said chase.

lll)

i3. In a printing press, the combination of a chase, a chase carrier, means conveying a slugy groupy to adjacent 'said chase carrier, said means carrying a member for projecting said slug group into saidchase.

9. In a printing press, the combination of a chase, a chase carrier, slug conveying means movable into a position adjacent the chase for conveying slug groups, means movable from opposite sides of the chase for projecting a slug group from the chase into said slug conveying means and from said conveying means into said` chase.

l0. In a printing press, the combination of a chase, a chase carrier, a slug conveying magazine for moving slugs toward and from said Chase, and separate instrumentalities for removingl a slug group fromthe chase into said magazine and from the magazine into said chase.

` 1,1. In a printing press, the combination of a chase, a chase carrier, atwo pocket magazine movable to adjacent the chase, means for removing .a slug group in the chase into a saidv pocket and from thev other said pocket into said, chase.

12. In a printing press, the combination of a chase, a chase carrier, a two pocket magazine movable to adjacent the chase, means for removing a slug group in the chase into a said pocket and from the. other said pocket into said chase, together with means for producing relative movement between said chase and magazine to produce successive registration of said pockets with a predetermined part of the chase.

13. Inl a printing press, the combination of a chase, a chase carrier, a tvvo pocket magazine fmovablfe to adjacent the chase, means for removing a slug group in the chase into a said pocket and from the other said pocket into said chase, together With means moving the magazine across the chase to produce successive registration of said pockets with a predetermined part of the chase.

14. In a printing press, the combination of a chase, a chase carrier, a tWo pocket magazine movable to adjacent the chase, means for removing a slug group in the chase into a said pocket and from the other said pocket into said chase, and means movablel across said pockets to retain .the slug groups therein.

15. In a printing press, thepcombination of a chase, a chase carrier, a magazine for conveying a slug group to adjacent a predetermined part of the chase, and means 1ocated back of the slug group in said. magazine for projecting said slug group into said predetermined part.

16. In a printing press, the combination of a chase, a 'chase carrier, a magazine for arranging a slug group adjacent said chase, an extractor located on the side of the chase opposite said magazine, and means for insei-ting a slug group carried, by said magazine into said chase.

17. In a printing press, they combination of a chase, a chase carriers av magazine for y' 18.In a printing press, a chase,;a' bed,y -a magazine for arranging a slug group ladjacent a predetermined part of said chase, means for extracting a 'slug group from the chase and inserting' a slug groupfrom saidl magazine therein, and means for producing relative movement of said chase and bed to permitextraction yand insertion of said slug groups.

19.In a printing' press, a chasea bed, a chase lifter. a magazine for larranging a slug group adjacent a predetermined part of said chase, and means extracting a slug group from thc chase `and inserting a slug groupI fromsaid magazine inplace thereof.

20. In a printing press, a chase, .a chase carrier comprising a Achase bed, a chase lifter, a magazine arranging a slug. group adjacenty said chase lvWheninlifted position, and means substituting a slug group in said chase for one in said magazine.

21. In a printing press, the combination of printing mechanism, a feeding mechanism, said feeding mechanism comprising a stack holder for a plurality of slug groups, means feeding slug groups from said magazine in an endvvise direction and then in a sideWise direction in spaced relation, and a magazine successively receiving said slug groups and conveying them to said printing mechanism, said magazine carrying a previously printed slug on its return movement.

22. In a printing press, the combination of printing mechanism, a feeding mechanism, said feeding mechanism comprising a stack holderfor a plurality of slug groups, means feeding slug groups from said stackholder in an endvvise direction and then in a sideWise direction in spaced relation, a magazine carrying a previously printed slug on its return movement, and a chute for receiving slug groups from said magazine.

23. In a printing press, the combination of a. printing mechanism, a slug feeding meehanism, said slug feeding mechanism comprising chutes extending oppositely in the same general direction, a magazine receiving a slug group from one chute, conveying it to said printing mechanism and receiving a slug group from said printing mechanism and returning it to adjacent another chute, and common means for kmoving said slug groups into and out of said magazine.

24. In a printing press, the combination of printing mechanism, a pair of latterly extending slug chutes, a magazine having a pocket .tor receiving slugsI .trom one of; said chutes and delivering said slug into the printing mechanism, and a second pocket for receiving slugs trom said printing mechanism and returning it to adjacent the other of said chutes.

25. In a printing press, the combination ot printing mechanism including a main continuously employed group of printing slugs, a slug feeding mechanism Ytor substituting slugs in said printing mechanism after each printing impression, together` With separate inking means for preinking said slugs prior to their being ted into said printing mechanism.

26. In a printing press, the combination ot printing mechanism including a main continuously employed group ot printing slugs, a slug feeding mechanism Jfor substituting` slugs in said printing mechanism after each printing impression, together with separate inking means for preinllin(r said slugs prior to their being ted into said printing mechanism and With the ink employed in said printing mechanism.

27. In a printing press, the combination ot printing mechanism, including an inking device, a slug feeding mechanism tor substitilting slugs in said printing mechanism after each printing impression, and a separate pre-inking mechanism of the character ot the inking mechanism ot said printing mechanism tor pre-.inking said slugs before the action ot the inking .mechanism of said printing mechanism.

2S. In a printing press, the combination of printing mechanism, and devices for substituting slug groups in said printing mechanism after eachv impression thereof, said devices including a movable member adapted to be disposed in a horizontal plane to receive a. slug to be printed and to discharge ay slug previously printed and to be disposed in a vertical plane to receive a previously printed slug from the printing mechanism, and-to insert a slug therein to be printed.

2t). In a printing press, the combination ot' printing mechanism, slug groups for printing, and devices for substituting the slug groups in said printing mechanism after impressions, said devices conducting the slug groups through a substantially circular path ot movement as an incident to the delivery thereof to the printing mechanism.

HOLGER THEILGAARD. 

